<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区 -->
    <el-card class="box-card">
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible=true">添加用户</el-button>
        </el-col>
      </el-row>

      <!-- 用户列表区域 -->
      <el-table :data="userlist" border stripe>
        <el-table-column label="#" type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <!-- 此处slot自定义名字，与内容匹配即可 -->
          <template v-slot="slot">
            <el-switch v-model="slot.row.mg_state" @change="userStateChanged(slot.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template v-slot="slot">
            <!-- 修改 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(slot.row.id)"
            ></el-button>
            <!-- 删除 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeUserById(slot.row.id)"
            ></el-button>
            <!-- 分配角色 -->
            <el-tooltip effect="dark" content="角色分配" placement="top" :enterable="false">
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="setRole(slot.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      ></el-pagination>
    </el-card>
    <!-- 添加用户时的对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
      <!-- 内容主体区域 -->
      <el-form ref="addFormRef" :model="addForm" label-width="70px" :rules="addFormRules">
        <el-form-item prop="username" label="用户名">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item prop="password" label="密码">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item prop="email" label="邮箱">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item prop="mobile" label="手机">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户的对话框 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      width="50%"
      :rules="editFormRules"
      @close="editDialogClosed"
    >
      <el-form ref="editFormRef" :model="editForm" label-width="70px" :rules="editFormRules">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item prop="email" label="邮箱">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item prop="mobile" label="手机">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配角色的对话框 -->
    <el-dialog
      title="分配"
      :visible.sync="setRoleDialogVisible"
      width="50%"
      @close="setRoleDialogClosed"
    >
      <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色：{{userInfo.role_name}}</p>
        <p>
          分配新角色：
          <el-select v-model="selectedRoleId" placeholder="请选择角色">
            <el-option
              v-for="item in roleList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id"
            ></el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    // 验证邮箱的规则
    let checkEmail = (rule, value, cb) => {
      // 验证邮箱的正则
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/;

      if (regEmail.test(value)) {
        return cb();
      }

      cb(new Error('请输入合法的邮箱'));
    };
    // 验证手机号的规则
    let checkMobile = (rule, value, cb) => {
      // 验证手机号的正则
      const regMoblie = /^(0|86|17951)?(13[0-9]|15[0123456789]|17[678]|18[0-9]|14[57])[0-9]{8}$/;

      if (regMoblie.test(value)) {
        return cb();
      }

      cb(new Error('请输入合法的手机号'));
    };
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 2,
      },
      userlist: [],
      total: 0,
      // 控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: '',
      },
      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '用户名的长度在3~10个字符之间' },
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '用户名的密码在6~15个字符之间' },
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' },
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' },
        ],
      },
      editDialogVisible: false,
      // 用户查询到的用户信息对象
      editForm: {},
      // 查询到的用户信息，的验证规则
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' },
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' },
        ],
      },
      // 分配角色的对话框的关闭情况
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色的数据列表
      roleList: [],
      // 被分配角色的用户ID
      selectedRoleId: '',
    };
  },
  created() {
    this.getUserList();
  },
  methods: {
    // 根本，获取用户列表数据
    async getUserList() {
      const { data: res } = await this.$http.get('users', {
        params: this.queryInfo,
      });

      if (res.meta.status !== 200) {
        return this.$message.error('获取用户列表失败');
      }
      this.userlist = res.data.users;
      this.total = res.data.total;
      //   console.log(res);
    },
    // 监听pagesize改变事件
    handleSizeChange(newSize) {
      //   console.log(newSize);
      this.queryInfo.pagesize = newSize;
      this.getUserList();
    },
    // 监听页码值改变的事件
    handleCurrentChange(newPage) {
      //   console.log(newPage);
      this.queryInfo.pagenum = newPage;
      this.getUserList();
    },
    // 监听开关状态的改变
    async userStateChanged(userinfo) {
      //   console.log(userinfo);
      const { data: res } = await this.$http.put(
        `users/${userinfo.id}/state/${userinfo.mg_state}`
      );
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state;
        return this.$message.error('更新用户状态失败');
      }
      this.$message.success('更新用户状态成功');
    },
    // 监听添加用户对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields();
    },
    // 发出添加用户的网络请求
    addUser() {
      this.$refs.addFormRef.validate(async (valid) => {
        // console.log(valid);
        if (!valid) return;
        // 发起真正的添加用户网络请求
        const { data: res } = await this.$http.post('users', this.addForm);

        if (res.meta.status !== 201) {
          return this.$message.error('添加用户失败');
        }
        this.$message.success('添加用户成功');
        this.addDialogVisible = false;
        // 修改后更新列表
        this.getUserList();
      });
    },
    // 展示编辑用户的对话框
    async showEditDialog(id) {
      const { data: res } = await this.$http.get('users/' + id);
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败');
      }
      this.editForm = res.data;
      this.editDialogVisible = true;
      // console.log(id);
    },
    // 监听修改用户信息对话框的关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields();
    },
    // 修改用户信息并提交
    editUserInfo() {
      // 预验证
      this.$refs.editFormRef.validate(async (valid) => {
        // console.log(valid);
        if (!valid) {
          return;
        }
        // 预验证通过则发起数据请求
        const { data: res } = await this.$http.put(
          'users/' + this.editForm.id,
          {
            email: this.editForm.email,
            mobile: this.editForm.mobile,
          }
        );
        if (res.meta.status !== 200) {
          return this.$message.error('修改用户信息失败');
        }
        // 状态码200，提示成功->关闭对话框->更新用户列表
        this.$message.success('修改用户信息成功');
        this.editDialogVisible = false;
        this.getUserList();
      });
    },
    // 根据id删除对应数据
    async removeUserById(id) {
      // 弹框询问是否确认删除
      const confirmResult = await this.$confirm(
        '此操作将永久删除该用户, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning',
        }
      ).catch((err) => err);
      // 点击确认返回confirm字符串，取消返回cancel字符串
      // 此处为取消
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除');
      }
      // 确认后真正发起删除请求
      const { data: res } = await this.$http.delete('users/' + id);
      if (res.meta.status !== 200) {
        return this.$message.error('删除用户失败！');
      }
      this.$message.success('删除用户成功！');
      this.getUserList();
    },

    // 展示分配角色的对话框
    async setRole(userInfo) {
      this.userInfo = userInfo;

      // 在展示对话框之前，获取角色列表
      const { data: res } = await this.$http.get('roles');
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败');
      }
      this.roleList = res.data;
      this.setRoleDialogVisible = true;
      console.log(this.selectedRoleId);
    },
    // 关闭分配角色对话置空
    setRoleDialogClosed() {
      this.selectedRoleId = '';
      this.userInfo = {};
    },
    // 点击按钮分配角色
    async saveRoleInfo() {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择要分配的角色');
      }
      const { data: res } = await this.$http.put(
        `users/${this.userInfo.id}/role`,
        {
          rid: this.selectedRoleId,
        }
      );
      if (res.meta.status !== 200) {
        return this.$message.error('更新角色失败');
      }
      this.$message.success('更新角色成功');
      this.getUserList();
      this.setRoleDialogVisible = false;
    },
  },
};
</script>

<style lang="less" scoped>
</style>